Twilio incident
SMS Delivery Failures from a Subset of Twilio Alphanumeric Sender IDs to Altan Redes Mexico
Twilio experienced a minor incident on August 21, 2026 affecting SMS, Latin America, lasting 4h 18m. The incident has been resolved; the full update timeline is below.
Affected components
Update timeline
- investigating Aug 21, 2026, 03:08 AM UTC
Twilio customers may be experiencing SMS delivery failures from a subset of Twilio Alphanumeric Sender IDs to Altan Redes network subscribers in Mexico. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.
- investigating Aug 21, 2026, 04:08 AM UTC
Twilio customers may be experiencing SMS delivery failures from a subset of Twilio Alphanumeric Sender IDs to Altan Redes network subscribers in Mexico. Our team is actively investigating this issue. We will provide another update in 2 hours or as soon as more information becomes available.
- identified Aug 21, 2026, 05:52 AM UTC
Twilio customers may be experiencing SMS delivery failures from a subset of Twilio Alphanumeric Sender IDs to Altan Redes network subscribers in Mexico. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.
- monitoring Aug 21, 2026, 06:57 AM UTC
We have observed a recovery in SMS delivery from a subset of Twilio Alphanumeric Sender IDs to Altan Redes network subscribers in Mexico and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.
- resolved Aug 21, 2026, 07:27 AM UTC
The incident has been resolved and SMS delivery from a subset of Twilio Alphanumeric Sender IDs to Altan Redes network subscribers in Mexico is operating normally.